<template>
    <div>
        <!-- 卡片视图区域 -->
        <el-card>
            <el-row :gutter="20">
                <el-col :span="7">
                    <el-input placeholder="请输入内容" size="small"  v-model="queryInfo.name" class="input-with-select" clearable @clear="getRoleList">
                        <el-button slot="append" icon="el-icon-search" @click="getRoleList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" size="small" @click="addRoleDialogVisible = true">添加角色</el-button>
                </el-col>
            </el-row>
            <el-table :data="roleList" border stripe  v-loading="loading"
                      element-loading-text="拼命加载中"
                      element-loading-spinner="el-icon-loading">
                <el-table-column type="expand">
                    <template slot-scope="scope">
                        <el-row :class="['bdbottom',i1===0 ? 'bdtop':'','vcenter']" v-for="(item1,i1) in scope.row.child"
                                :key="item1.id">
                            <!--渲染一级菜单 -->
                            <el-col :span="5">
                                <el-tag closable @close="removeRoleById(scope.row,item1.id)">{{item1.title}}</el-tag>
                                <i class="el-icon-caret-right"></i>
                            </el-col>
                            <!--渲染二级和三级菜单 -->
                            <el-col :span="19">
                                <el-row :class="[i2===0 ? '':'bdtop','vcenter']" v-for="(item2,i2) in item1.child" :key="item2.id">
                                    <el-col :span="6">
                                        <el-tag type="success" closable @close="removeRoleById(scope.row,item2.id)">{{item2.title}}</el-tag>
                                        <i class="el-icon-caret-right"></i>
                                    </el-col>
                                    <el-col :span="18">
                                        <el-tag type="warning" closable @close="removeRoleById(scope.row,item3.id)"
                                                v-for="(item3) in item2.child" :key="item3.id">{{item3.title}}
                                        </el-tag>
                                    </el-col>
                                </el-row>
                            </el-col>
                        </el-row>
                    </template>
                </el-table-column>
                <el-table-column type="index" label="#"></el-table-column>
                <el-table-column prop="title" label="角色名称"></el-table-column>
                <el-table-column label="状态">
                    <template slot-scope="scope">
                        <el-switch v-model="scope.row.status"
                                   :active-value="1"
                                   :inactive-value="0"
                                   @change="changeStatus(scope.row)">
                        </el-switch>
                    </template>
                </el-table-column>
                <el-table-column label="操作">
                    <template slot-scope="scope">
                        <el-tooltip effect="dark" content="编辑"  placement="top" :enterable="false">
                            <el-button type="primary" icon="el-icon-edit" @click="showEditDialog(scope.row)" size="mini"></el-button>
                        </el-tooltip>
                        <el-tooltip effect="dark" content="删除" placement="top" :enterable="false">
                            <el-button type="danger" icon="el-icon-delete" size="mini"
                                       @click="showDelDialog(scope.row.id)"></el-button>
                        </el-tooltip>
                        <el-tooltip effect="dark" content="分配权限"  placement="top" :enterable="false">
                            <el-button type="warning" icon="el-icon-setting" size="mini"
                                       @click="showSetRoleDialog(scope.row)"></el-button>
                        </el-tooltip>
                    </template>
                </el-table-column>
            </el-table>
            <el-pagination
                    @size-change="handleSizeChange"
                    @current-change="handleCurrentChange"
                    :current-page="queryInfo.page"
                    :page-sizes="[10, 20, 30, 40,50]"
                    :page-size="queryInfo.limit"
                    layout="total, sizes, prev, pager, next, jumper"
                    :total="total">
            </el-pagination>
        </el-card>
        <el-dialog title="添加角色" :visible.sync="addRoleDialogVisible" width="50%" @close="addRoleDialogClose">
            <el-form :model="addRoleForm" :rules="addRoleFormRule" ref="addRoleFormRef" label-width="100px"
                     class="demo-ruleForm">
                <el-form-item label="角色名称" prop="title">
                    <el-input v-model="addRoleForm.title"></el-input>
                </el-form-item>
                <el-form-item label="状态" prop="status">
                    <el-switch v-model="addRoleForm.status"
                               :active-value="1"
                               :inactive-value="0"></el-switch>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
        <el-button @click="addRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addRoleInfo">确 定</el-button>
      </span>
        </el-dialog>
        <el-dialog title="修改角色" :visible.sync="editRoleDialogVisible" width="50%" @close="editRoleDialogClose">
            <el-form :model="editRoleForm" :rules="editRoleFormRule" ref="editRoleFormRef" label-width="100px"
                     class="demo-ruleForm">
                <el-form-item label="角色名称" prop="title">
                    <el-input v-model="editRoleForm.title"></el-input>
                </el-form-item>
                <el-form-item label="状态" prop="status">
                    <el-switch v-model="editRoleForm.status"
                               :active-value="1"
                               :inactive-value="0"></el-switch>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
        <el-button @click="editRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editRoleInfo">确 定</el-button>
      </span>
        </el-dialog>

        <el-dialog
                title="分配权限"
                :visible.sync="showSetRoleDialogVisible"
                width="50%" @close="showSetRoleDialogClose">
            <el-tree :data="rightList" :props="defaultProps" show-checkbox node-key="id" default-expand-all
                     :default-checked-keys="defaultKeys" ref="treeRef"></el-tree>
            <span slot="footer" class="dialog-footer">
    <el-button @click="showSetRoleDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="allotRights">确 定</el-button>
  </span>
        </el-dialog>
    </div>
</template>

<script>
export default {
    data() {
        return {
            queryInfo: {
                name:'',
                limit: this.$global_limit,
                page: this.$global_page
            },
            loading:true,
            roleList: [],
            total: 0,
            //所有权限的数据
            rightList: [],
            editRoleDialogVisible: false,
            showSetRoleDialogVisible: false,
            addRoleForm: {
                title: '',
                rules: '',
                status: 1
            },
            editRoleForm: {
                title: '',
                status: 1
            },
            defaultKeys: [],
            defaultProps: {
                children: 'child',
                label: 'title'
            },
            editRoleFormRule: {
                title: [
                    {required: true, message: '请输入角色名称', trigger: 'blur'},
                    {min: 2, max: 5, message: '长度在 2 到 5 个字符', trigger: 'blur'}
                ],
            },
            addRoleFormRule: {
                title: [
                    {required: true, message: '请输入角色名称', trigger: 'blur'},
                    {min: 2, max: 5, message: '长度在 2 到 5 个字符', trigger: 'blur'}
                ],
            },
            id: '',
            title: '',
            status: '',
            treeType: 'child',
            addRoleDialogVisible: false
        }
    },
    created() {
        this.getRoleList()
    },
    methods: {
        async getRoleList() {
            const {data: res} = await this.$http.get('admin/role_list', {params: this.queryInfo})
            if (res.code !== 200) return this.$message.error(res.data.message)
            this.roleList = res.data.list
            this.total = res.data.totalCount
            this.loading = false
        },
        handleSizeChange(newSize) {
            this.queryInfo.limit = newSize
            this.getRoleList()
        },
        handleCurrentChange(newPage) {
            this.queryInfo.page = newPage
            this.getRoleList()
        },
        editRoleDialogClose() {
            this.$refs.editRoleFormRef.resetFields()
        },
        addRoleDialogClose() {
            this.$refs.addRoleFormRef.resetFields()
        },
        showSetRoleDialogClose() {
            this.defaultKeys = []
        },
        //更改角色状态
        async changeStatus(roleList) {
            const {data: res} = await this.$http.put(`admin/update_role_status/${roleList.id}/${roleList.status}`)
            if (res.code !== 200) {
                roleList.status = 0
                return this.$message.error(res.data.message)
            }
            this.$message.success('更改成功')
            // this.getRoleList()
        },
        //根据id删除对应的权限
        async removeRoleById(role, role_id) {
            const configResult = await this.$confirm('此操作将永久删除该权限, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(err => err);
            if (configResult !== 'confirm') return this.$message.info('已取消删除')
            const {data: result} = await this.$http.delete(`admin/del_role/${role.id}/${role_id}`)
            if (result.code !== 200) return this.$message.error(result.data.message)
            this.$message.success('删除成功')

            role.child = result.data.list

        },
        async showDelDialog(id) {
            const configResult = await this.$confirm('此操作将永久删除该角色, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(err => err);
            if (configResult !== 'confirm') return this.$message.info('已取消删除')
            const {data: result} = await this.$http.delete(`admin/del_group/${id}`)
            if (result.code !== 200) return this.$message.error(result.data.message)
            //删除成功后页码改变返还为上一页
            let totalPage = Math.ceil((this.total - 1) / this.queryInfo.limit);
            let currentPage = this.queryInfo.page > totalPage ? totalPage : this.queryInfo.page;
            this.queryInfo.page = this.queryInfo.page < 1 ? 1 : currentPage;
            this.$message.success('删除成功')

            this.getRoleList()
        },
        showEditDialog(role) {
            if (role.id === 1) return this.$message.error('无法编辑超级管理员')
            this.editRoleForm.title = role.title
            this.editRoleForm.status = role.status
            this.$set(this.editRoleForm, 'id', role.id)
            this.$set(this.editRoleForm, 'rules', role.rules)
            this.editRoleDialogVisible = true;
        },
        editRoleInfo() {
            this.$refs.editRoleFormRef.validate(async valid => {
                if (!valid) return this.$message.error('输入不合法')
                const {data: result} = await this.$http.post('admin/save_role', this.editRoleForm)
                if (result.code !== 200) return this.$message.error(result.data.message)
                this.$message.success('编辑角色成功')
                this.editRoleDialogVisible = false
                this.getRoleList()
            })
        },
        //分配权限
        async showSetRoleDialog(role) {
            if (role.id === 1) return this.$message.error('超级管理员不用分配')
            this.id = role.id
            this.title = role.title
            this.status = role.status
            //获取所有权限列表
            const {data: result} = await this.$http.get('admin/menu_list', {params: {'type':this.treeType}})
            if (result.code !== 200) return this.$message.error(result.data.message)
            this.rightList = result.data.list;
            this.getLeafKeys(role, this.defaultKeys)
            this.showSetRoleDialogVisible = true
        },
        getLeafKeys(node, arr) {
            if (!node.child) {
                return arr.push(node.id)
            }
            node.child.forEach(item => this.getLeafKeys(item, arr))
        },
        //保存权限
        async allotRights() {
            const keys = [
                //通过展开运算符...
                ...this.$refs.treeRef.getCheckedKeys(),
                ...this.$refs.treeRef.getHalfCheckedKeys(),
            ]
            const idStr = keys.join(',')
            const {data: result} = await this.$http.post('admin/save_role', {
                'id': this.id,
                'title': this.title,
                'status': this.status,
                'rules': idStr

            })
            if(result.code !== 200) return this.$message.error(result.data.message)
            this.$message.success('分配权限成功')
            this.showSetRoleDialogVisible = false
            this.getRoleList()
        },
        //新增角色
        addRoleInfo() {
            this.$refs.addRoleFormRef.validate(async valid => {
                if (!valid) return this.$message.error('输入不合法')
                const {data: result} = await this.$http.post('admin/save_role', this.addRoleForm)
                if (result.code !== 200) return this.$message.error(result.data.message)
                this.$message.success('新增角色成功')
                this.addRoleDialogVisible = false
                this.getRoleList()
            })
        }
    }
}
</script>

<style scoped>
.el-tag {
    margin: 7px;
}

.bdtop {
    border-top: 1px solid #eee;
}

.bdbottom {
    border-bottom: 1px solid #eee;
}

.vcenter {
    display: flex;
    align-items: center;
}
</style>
